diff --git a/src/windows/strptime.cpp b/src/windows/strptime.cpp
new file mode 100644
index 00000000..b582fd9a
--- /dev/null
+++ b/src/windows/strptime.cpp
@@ -0,0 +1,255 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+
+#ifdef _MSC_VER
+const char * strp_weekdays[] =
+{ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" };
+const char * strp_monthnames[] =
+{ "january", "february", "march", "april", "may", "june", "july", "august", "september", "october", "november", "december" };
+bool strp_atoi(const char * & s, int & result, int low, int high, int offset)
+{
+	bool worked = false;
+	char * end;
+	unsigned long num = strtoul(s, &end, 10);
+	if (num >= (unsigned long)low && num <= (unsigned long)high)
+	{
+		result = (int)(num + offset);
+		s = end;
+		worked = true;
+	}
+	return worked;
+}
+char * strptime(const char *s, const char *format, struct tm *tm)
+{
+	bool working = true;
+	while (working && *format && *s)
+	{
+		switch (*format)
+		{
+		case '%':
+		{
+			++format;
+			switch (*format)
+			{
+			case 'a':
+			case 'A': // weekday name
+				tm->tm_wday = -1;
+				working = false;
+				for (size_t i = 0; i < 7; ++i)
+				{
+					size_t len = strlen(strp_weekdays[i]);
+					if (!strnicmp(strp_weekdays[i], s, len))
+					{
+						tm->tm_wday = i;
+						s += len;
+						working = true;
+						break;
+					}
+					else if (!strnicmp(strp_weekdays[i], s, 3))
+					{
+						tm->tm_wday = i;
+						s += 3;
+						working = true;
+						break;
+					}
+				}
+				break;
+			case 'b':
+			case 'B':
+			case 'h': // month name
+				tm->tm_mon = -1;
+				working = false;
+				for (size_t i = 0; i < 12; ++i)
+				{
+					size_t len = strlen(strp_monthnames[i]);
+					if (!strnicmp(strp_monthnames[i], s, len))
+					{
+						tm->tm_mon = i;
+						s += len;
+						working = true;
+						break;
+					}
+					else if (!strnicmp(strp_monthnames[i], s, 3))
+					{
+						tm->tm_mon = i;
+						s += 3;
+						working = true;
+						break;
+					}
+				}
+				break;
+			case 'd':
+			case 'e': // day of month number
+				working = strp_atoi(s, tm->tm_mday, 1, 31, 0);
+				break;
+			case 'D': // %m/%d/%y
+			{
+				const char * s_save = s;
+				working = strp_atoi(s, tm->tm_mon, 1, 12, -1);
+				if (working && *s == '/')
+				{
+					++s;
+					working = strp_atoi(s, tm->tm_mday, 1, 31, 0);
+					if (working && *s == '/')
+					{
+						++s;
+						working = strp_atoi(s, tm->tm_year, 0, 99, 0);
+						if (working && tm->tm_year < 69)
+							tm->tm_year += 100;
+					}
+				}
+				if (!working)
+					s = s_save;
+			}
+			break;
+			case 'H': // hour
+				working = strp_atoi(s, tm->tm_hour, 0, 23, 0);
+				break;
+			case 'I': // hour 12-hour clock
+				working = strp_atoi(s, tm->tm_hour, 1, 12, 0);
+				break;
+			case 'j': // day number of year
+				working = strp_atoi(s, tm->tm_yday, 1, 366, -1);
+				break;
+			case 'm': // month number
+				working = strp_atoi(s, tm->tm_mon, 1, 12, -1);
+				break;
+			case 'M': // minute
+				working = strp_atoi(s, tm->tm_min, 0, 59, 0);
+				break;
+			case 'n': // arbitrary whitespace
+			case 't':
+				while (isspace((int)*s))
+					++s;
+				break;
+			case 'p': // am / pm
+				if (!strnicmp(s, "am", 2))
+				{ // the hour will be 1 -> 12 maps to 12 am, 1 am .. 11 am, 12 noon 12 pm .. 11 pm
+					if (tm->tm_hour == 12) // 12 am == 00 hours
+						tm->tm_hour = 0;
+				}
+				else if (!strnicmp(s, "pm", 2))
+				{
+					if (tm->tm_hour < 12) // 12 pm == 12 hours
+						tm->tm_hour += 12; // 1 pm -> 13 hours, 11 pm -> 23 hours
+				}
+				else
+					working = false;
+				break;
+			case 'r': // 12 hour clock %I:%M:%S %p
+			{
+				const char * s_save = s;
+				working = strp_atoi(s, tm->tm_hour, 1, 12, 0);
+				if (working && *s == ':')
+				{
+					++s;
+					working = strp_atoi(s, tm->tm_min, 0, 59, 0);
+					if (working && *s == ':')
+					{
+						++s;
+						working = strp_atoi(s, tm->tm_sec, 0, 60, 0);
+						if (working && isspace((int)*s))
+						{
+							++s;
+							while (isspace((int)*s))
+								++s;
+							if (!strnicmp(s, "am", 2))
+							{ // the hour will be 1 -> 12 maps to 12 am, 1 am .. 11 am, 12 noon 12 pm .. 11 pm
+								if (tm->tm_hour == 12) // 12 am == 00 hours
+									tm->tm_hour = 0;
+							}
+							else if (!strnicmp(s, "pm", 2))
+							{
+								if (tm->tm_hour < 12) // 12 pm == 12 hours
+									tm->tm_hour += 12; // 1 pm -> 13 hours, 11 pm -> 23 hours
+							}
+							else
+								working = false;
+						}
+					}
+				}
+				if (!working)
+					s = s_save;
+			}
+			break;
+			case 'R': // %H:%M
+			{
+				const char * s_save = s;
+				working = strp_atoi(s, tm->tm_hour, 0, 23, 0);
+				if (working && *s == ':')
+				{
+					++s;
+					working = strp_atoi(s, tm->tm_min, 0, 59, 0);
+				}
+				if (!working)
+					s = s_save;
+			}
+			break;
+			case 'S': // seconds
+				working = strp_atoi(s, tm->tm_sec, 0, 60, 0);
+				break;
+			case 'T': // %H:%M:%S
+			{
+				const char * s_save = s;
+				working = strp_atoi(s, tm->tm_hour, 0, 23, 0);
+				if (working && *s == ':')
+				{
+					++s;
+					working = strp_atoi(s, tm->tm_min, 0, 59, 0);
+					if (working && *s == ':')
+					{
+						++s;
+						working = strp_atoi(s, tm->tm_sec, 0, 60, 0);
+					}
+				}
+				if (!working)
+					s = s_save;
+			}
+			break;
+			case 'w': // weekday number 0->6 sunday->saturday
+				working = strp_atoi(s, tm->tm_wday, 0, 6, 0);
+				break;
+			case 'Y': // year
+				working = strp_atoi(s, tm->tm_year, 1900, 65535, -1900);
+				break;
+			case 'y': // 2-digit year
+				working = strp_atoi(s, tm->tm_year, 0, 99, 0);
+				if (working && tm->tm_year < 69)
+					tm->tm_year += 100;
+				break;
+			case '%': // escaped
+				if (*s != '%')
+					working = false;
+				++s;
+				break;
+			default:
+				working = false;
+			}
+		}
+		break;
+		case ' ':
+		case '\t':
+		case '\r':
+		case '\n':
+		case '\f':
+		case '\v':
+			// zero or more whitespaces:
+			while (isspace((int)*s))
+				++s;
+			break;
+		default:
+			// match character
+			if (*s != *format)
+				working = false;
+			else
+				++s;
+			break;
+		}
+		++format;
+	}
+	return (working ? (char *)s : 0);
+}
+#endif // _MSC_VER
\ No newline at end of file
diff --git a/src/windows/strptime.h b/src/windows/strptime.h
new file mode 100644
index 00000000..6bf30110
--- /dev/null
+++ b/src/windows/strptime.h
@@ -0,0 +1,3 @@
+
+extern char * strptime(const char *s, const char *format, struct tm *tm);
+