Leap xyoo yog ib qho yooj yim los laij. Koj tsuas yog yuav tsum tau faib ua yooj yim.
Kauj ruam
Kauj Ruam 1. Pib nrog lub xyoo uas koj xav suav
Kauj Ruam 2. Txheeb xyuas tias lub xyoo tau faib ua 4 (qhov tshwm sim yog ib qho zauv uas tsis muaj qhov seem)
Txwv tsis pub, zoo li xyoo 1997, xyoo tsis yog xyoo dhau mus. Yog tias yog, zoo li xyoo 2012, txav mus rau lwm qhov ntxiv.
Kauj Ruam 3. Txheeb xyuas tias xyoo tau faib los ntawm 100
Yog tias nws tau faib ua 4, tab sis tsis yog 100, xws li xyoo 2012, ces xyoo yog xyoo dhau mus. Yog tias xyoo tau faib ua 4 thiab 100, xws li 2000, txav mus rau lwm qhov ntxiv.
Kauj Ruam 4. Txheeb xyuas yog tias xyoo faib tau 400
Yog tias xyoo tau faib los ntawm 100, tab sis tsis faib los ntawm 400, xyoo yog dab tsi tsis muaj xyoo leap. Yog tias xyoo tau faib los ntawm ob qho tib si, xyoo yog xyoo dhau mus. Yog li 2000 yog xyoo leap.
Lub tswv yim
- Leap xyoo: 1600, 1604, 1608, 1612, 1616… 1684, 1688, 1692, 1696, 1704 (1700 cais, vim li cas?), 1708, 1712… 1792, 1796, 1804 (1800 tsis suav nrog), 1808, 1812… 1892, 1896, 1904 (1900 tsis suav nrog), 1908, 1912… 1992, 1996, 2000 (2000 suav nrog, vim li cas?), 2004, 2008, 2012… 2092, 2096, 2104 (2100 tsis suav nrog)… 2196, 2204… 2296, 2304… 2396, 2400 (vim li cas?), 2404 … thiab lwm yam.
- Txhua xyoo uas tau faib los ntawm "4" yog xyoo dhau mus. 1 xyoos sib npaug rau '365 hnub + 6 teev', yog li nws sib npaug rau 365 1/4 hnub. Txhua 4 xyoos, 6 teev yuav dhau los ua ib hnub (6X4 = 24 teev). Tias yog vim li cas peb muaj ib hnub ntxiv nyob rau lub Ob Hlis.
