Date range limit
From semanticweb.org
2^31 seconds = 2,147,483,648 seconds
The minimum date/time with Type:Date is this amount of time before 1 Jan 1970, 01:00:00, which is <ask headers=hide>date range+warning.pngThe date "+" was not understood.*warning.pngThe date "*" was not understood.</ask>.
The maximum date/time with Type:Date is this amount of time after 1 Jan 1970, 00:59:59, which is <ask headers=hide>date range+warning.pngThe date "+" was not understood.*warning.pngThe date "*" was not understood.</ask>.
68 years is 17 * 1461 days = 24837 days = 2,145,916,800 seconds, so 1,566,848 seconds remain, which is 18 days, 3 hours, 13 minutes, and 8 seconds.
- <ask headers=hide>date range limit+*s</ask>
- <ask headers=hide>date range limit+*m</ask>
- <ask headers=hide>date range limit+*h</ask>
- <ask headers=hide>date range limit+*d</ask>
- <ask headers=hide>date range limit+*a</ask>
See also Date range.