Information on recent additions to both the General Roman Calendar and U.S. Proper Calendar has been moved to the Liturgical Year & Calendar page.

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(2024 calendar updated Sept. 29, 2023 to correct Jun. 28, 2024 entry;2025 calendar updated Nov. 1, 2024 to amend the Miscellaneous Notes and Dec. 8, 2024 entry and to correct Nov. 24, 2025 entry)

Tunnellighting design

Built on the backbone of the multi-award-winning DLK, the Tunnel Ray uses the same, proven solid body technology that allows it to be compact, lightweight, robust and completely resistant to vibrations.

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The calendar is based upon the General Roman Calendar, promulgated by Pope Saint Paul VI on February 14, 1969, subsequently amended by the Holy See, and the Proper Calendar for the Dioceses of the United States of America, approved by the USCCB and confirmed in 2010 by the Congregation for Divine Worship and the Discipline of the Sacraments.

Built on the backbone of the multi-award-winning DLK, the Tunnel Ray is both lightweight and versatile with the flexibility to fit many different applications.

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Coolon luminaires are covered by a solid comprehensive manufacturer’s warranty that covers a range of possible defects and performance parameters throughout the duration of the warranty period.

Each year the Secretariat of Divine Worship of the United States Conference of Catholic Bishops publishes the Liturgical Calendar for the Dioceses of the United States of America. This calendar lists each day's celebration, rank, liturgical color, citations for the Lectionary for Mass, and Psalter cycle for the Liturgy of the Hours. It is primarily used by authors of ordines and other liturgical aids published to foster the celebration of the liturgy in our country, but may also be used by anyone who downloads a copy.

The Tunnel Ray is designed to provide the most energy-efficient way of delivering a level of luminance that far exceeds that of its comparable gas discharge lamp predecessors.

The United States Conference of Catholic Bishops’ (USCCB’s) mission is to encounter the mercy of Christ and to accompany His people with joy.

Our products are designed and manufactured in Australia. Engineered to perfection, using only the highest quality components and highly skilled labour, each luminaire is assembled and thoroughly tested to ensure that it exceeds the highest standards.