I wonder how did you get this informations

For example, the current period (period 1170) starts when the unix time = 1170 * 1210000 = 1415700000, which is Tue, 11 Nov 2014 10:00:00 GMT
This is period #1135. Period #1136 will start in about 11 hours, when the unix time 1374560000 % 1210000 == 0.