Leviticus 23:34-36

ASV_Strongs(i)
  34 H1696 Speak H1121 unto the children H3478 of Israel, H559 saying, H2568 On the fifteenth H3117 day H7637 of this seventh H2320 month H2282 is the feast H5521 of tabernacles H7651 for seven H3117 days H3068 unto Jehovah.
  35 H7223 On the first H3117 day H6944 shall be a holy H4744 convocation: H6213 ye shall do H5656 no servile H4399 work.
  36 H7651 Seven H3117 days H7126 ye shall offer H801 an offering made by fire H3068 unto Jehovah: H8066 on the eighth H3117 day H6944 shall be a holy H4744 convocation H7126 unto you; and ye shall offer H801 an offering made by fire H3068 unto Jehovah: H6116 it is a solemn assembly; H6213 ye shall do H5656 no servile H4399 work.
Reformed Dating